Call data recording automatic telephone system



June 3, 1952 H. D. CAHILL'" ETAL CALL DATA RECORDING AUTOMATIC TELEPH NE SYSTEM 68 Sheets-Sheet 1 Filed Oct. 29. 1948 I H.D. UAH/LL INVENTORS WW GARPENTER T DINO/VD ATTORALEY mm 9H KMSEW June 3, 1952 H. D. CAHlL-L ET AL CALL DATA RECORDING AUTOMATIC TELEPHONE SYSTEM 68 Sheets-Sheet 2 Filed Oct. 29. 1948 MD. CAI-[ILL lNVE/VRDRS WW CARPENTER 8y 7'' D/MOND MGR ATTORNEY June 1952 H. D.'CAHILL ET AL 2,599,358

CALL DATA RECORDING AUTOMATIC TELEPHONE SYSTEM Filed Oct. 29, 1948 68 Sheets-Sheet 3 FIG. 5

J 1952 H. D. CAHILL ET AL 2,599,358

CALL DATA RECORDING AUTOMATIC TELEPHONE SYSTEM Filed Oct. 29. 1948 as Sheets-Sheet 4 H. 0. CA H/L L v //V VE/V 70/?8 M. W CARPENTER By D/MONO ATTORNEY June 1952 H. D. CAHILL ETAL CALL DATA RECORDING AUTOMATIC TELEPHONE SYSTEM 68 Sheets-Sheet 5 Filed 001;. 29. 1948 H. D. GAH/LL INVENTORS WW GfiEPENTER ATTORNEY J1me 1952 H. D. CAHILL ET AL 2,599,358

CALL DATA RECORDING AUTOMATiC TELEPHONE SYSTEM Filed 001'. 29, 1948 68 Sheets-Sheet 6 H. 0. GAH/Ll.

INVENTORS W CARPENTER June 3, 1952 H. D. CAHILL ETAL CALL DATA RECORDING AUTOMATIC TELEPHONE SYSTEM 68 Sheets-Sheet '7 Filed Oct. 29. 1948 H.D. CAHiLL #vvavroes CARPENTER Z' B L D/MOND A TTORNEY June 3, 1952 H. D. CAHILL ET AL CALL DATA RECORDING AUTOMATIC TELEPHONE SYSTEM 68 Sheets-Sheet 8 Filed Oct. 29, 1948 mmv ATTORNEY June 3, 1952 H. D. CAHlLL ET AL CALL DATA RECORDING AUTOMATIC TELEPHONE SYSTEM 68 Sheets-Sheet 9 Filed Oct. 29, 1948 man/0 ATTORNEY H.D. CAH/LL lNl/E/VTORS- mu CARPENTER June 3, 1952 H. D. CAHILL- ET AL CALL DATA RECORDING AUTOMATIC TELEPHONE SYSTEM 68 Sheets-Sheet 10 Filed Oct. 29, 1948 H0. OAH/LL INVENTORS WM CARPENTER Z' L. DIMOND BY ATTORNEY June 3, 1952 D, cAHlLL ET AL 2,599,358

CALL DATA RECORDING AUTOMATIC TELEPHONE SYSTEM Filed Oct. 29, 1948 68 Sheets-Sheet ll w IQ ' H0. CAH/LL I/VVENTORS W CARPENTER 7." IMO/VD BY r" k ATTONE) June'3, 1952 H. D. CAHlLL ETAL 2,599,358

CALL DATA RECORDING AUTOMATIC TELEPHONE SYSTEM Filed 001;. 29, 1948 68 Sheets-Sheet 1-2 #0. GAH/LL lA/VE/VTORS we; CARPENTER D/MOND FIG. /2

AmkA/EY J1me 1952 H. D. CAHILL ET AL ,35

CALL DATA RECORDING AUTOMATIC TELEPHONE SYSTEM Filed Oct. 29. 1948 68 Sheets-Sheet 13 H.D. GAH/LL INVENTORS' If! GARPENTER By IMO/l0 FIG/3 ATTOR/VE Y June 3, 1952 H. D. CAHILL ET AL CALL MDATA RECORDING AUTOMATIC TELEPHONE SYSTEM 68 Sheets-Sheet 14 Filed Oct. 29, 1948 E at oh T MD. GAH/LL INVENTORS WW CARPENTER 7.' DIM 0ND BY ATTORNEY June 3, 1952 H. D. CAHILL ET AL CALL DATA RECORDING AUTOMATIC TELEPHONE SYSTEM 68 Sheets-Sheet 15 Filed Oct. 29. 1948 5 Qt E H.D. CflH/LL INVE/VTORS WW CARPENTER ATTORNEY June 3, 1952 H. D. CAHlLL ET AL CALL DATA RECORDING AUTOMATIC TELEPHONE SYSTEM 68 Sheets-Sheet 16 Filed Oct. 29, 1948 /-/.0. GAH/LL #vmvrms mu CARPENTER I IMO/VD A 7' TOR/VE Y J1me 1952 I H. 0. CAHlLL ETAL 2,599,358

CALL DATA RECORDING AUTOMATIC TELEPHONE SYSTEM Filed OGt. 29, 1948 68 Sheets-Sheet 17 MA STER TZIT FRAM 3 H0. CAH/LL INVENTORS WW CARPENTER By 7."L IMO/VD FIG/7 ATTORNEY June 3, 1952 H. D. CAHlLL ET AL CALL DATA RECORDING AUTOMATIC TELEPHONE SYSTEM 68 Sheets-Sheet 18 Filed Oct. 29, 1948 kbv Uk m n m M L 0 INN m ,T C M .4 J HWT. m V: B 5 R m w W June 3, 1952 H. D; CAHILL ET AL CALL DATA RECORDING AUTOMATIC TELEPHONE SYSTEM Filed Oct. 29. 1948 68 Sheets-Sheet 19 Ew hwv ATTORNEY 14.0. CAH/LL INVENTORS WW CAJRPENTER a/ua/vo H. D. CAHILL ETAL CALL DATA RECORDING AUTOMATIC TELEPHONE SYSTEM Filed Oct. 29, 1948 June 3, 1952 68 Sheets-Sheet 20 W ksumsu h. D. GAH/LL INVENTORS "M71 OARPE/VT E I? D/MO/VD B) ATTONEY 

